Stereotype-printing-plate-finishing mechanism.



A. W. WOOD. STEBEOTYPE PRINTING-PLATE FINISHING MECHANISM. APPLICATION FILED MAY 20, 1902. RENEWED JULY 28, 1911. 19

Ln m mm H P 55 7 y z \\\\\\\\\\\\\\\\l||!IIllIl i/Q'Znesses H. A. W. WOOD. STEREOTYPE PRINTING PLATE FINISHING MECHANISM. 1 APPLICATION FILED My 20. 1902. RENEWED JULY 26, 1911. LQQ Q Iafbented P1101121, 19H.

' 7 EHEETE-SHBET 2.

Winew'as'" fizveiiwr" H. A. W. WOOD. STBREOTYPE PRINTING PLATE FINISHING MECHANISM. APPLIOATION FILED MAY 20, 1902. RENEWED JULY 26, 191;,

1 @9,@9@ Pafientml NM. QB, 1911.

7 SHEETEFBEEET 3. Fig, 4.

H.- A. WEWOOD.

STEREOTYPE PRINTING PLATE FINISEiNG MECHANISM.

APPLICATION FILED MAY 20. 1902. RBNEWED JULY 26, 1911. Lggg ggg Patented Nov. 21, 1911.

7 SHEETSrSHEE'If 4.

1, it.- ji-ri @r Witnesse a Ina/anion- HA. WWOOCZ,

Patented Nov. 21, 1911.

7 SHEETSSHEET 5.

,By his fltfornega' H. A. W. WOOD.

STEHEOTYPE PRINTING PLATE FINISHING MECHANISM.

APPLICATION FILED MAY 20, 1902. RENEWED JULY 26, 1911. mwwu H A. W. WOOD. STEREOTYPE PRINTING PLATE FINISHING MECHANISM.

APPLIGATION FILED MAY 20, 1902. RENEWED JULY 26,1911.

LQQQQQQD Pat nted NW. 1, 1911;.

7 SHEETS- ABET 6.

inumtor' 11A.

H. AQWVWOOD. STEEEOTYPE PRINTING PLATE FINISHING MECHANISM.

APPLICATION FILED MAY 20, 1902. RENEWED JULY 26, 1911. LUQQEQGQD Patented Nov. 21, 1911.

gm N @m vg 7 8EEE TSSHEET 7.

vendor the line lL -QIEZ tirtrrini erarae HENRY A. WISE WOOD, 0F NEW YORK,

PATENT N. Y., ASSIGNOR. BY MESNE ASSXGNMENTS, TO

THE AUTOPLATE COMPANY OF AMERICA. OF JERSEY CITY, NEW JERSEY. A COR- PORATION 0F NEW' JERSEY.

STEREOTYPE-PRINTING-PLATE-TEINISHING MECHANISDI Il .illlitlh tlll.

To all whom it may concern:

Be it known that l, HENRY A. Wish 'oon. a citizen of the United States, residing at New York, in the county of New York and State of I\ 'e\v York, have invented a new and useful Stereotype-Printing-Piate-Finish-ing i hlfllltllllblll, of which the following is a specification.

In my patent granted Feb. 17, 1903, No. 721,117, I have shown, described and claimed an automatic stereotype printing plate casting mechanism combined with a stereotypeprinting plate finishing mechanism. The invention covered by said application is also shown, described and claimed in finglish Patent No. 18,742, of Aug. 12, 189?.

in a further application for patent tiled by-me March 12,1900. Serial No. l have shown,-tlesciihed and claimed certain improvements in said stereotype printing plate casting and finishing mechanism. These latter improvements are also shown.

described and claimed in English Patent No.

2,525, of Feb- 8, 1900.

l liave made certain further improvements in the stereotype printing mechanism shown, described and claimed in these prior patents, and these further i1nprovements in the finishing mechanism are shown, described and claimed in this application for patent, and illustrated in the acconipanying seven sheets of drawings "fornr ing part thereof.

Referring to said drawings. Figure l is a side elevation of part of said plate linishing' mechanism. Fig. 2 a sectional view illustrating a safety device used for the conveying mechanism. Fig". it is an end elevation of part of said plate finishing" mechanisni. Fi 4 is a sectional plan view, Fig. 5 is a side elevation. and Fig. l) a cross sectional elevation of one of the mechanisms l hereinat'ter term a router used at the delivery end of the machine. l ig. is an end elevation of a part l term the arch." Figs. 8 and S) are cross-sectional views of the sharing tool. Fig. 10 is a partial perspective view of a positioning piece used on the shaving tool. i1 is a side elevation of the front part oi said finishing niechzc niszn. Fig. l2 is a sectional view talten on of it illustrating a de- Specification of Letters Patent. implication filed May 20, 1802, Serial No. 108.222.

plate finishing Patented Not. 233 .ll EM l.

3 Renewed July 28. 1911. Serial No. 6%0535.

? tail. Fig. 133 is a partial end elevation illustrating the arrangement of the driving v mechanism. Fig. 1 1 is a sectional front clevation thereof. Fig. l?) is an ele\ ation or the rheostat. Fig. ll; is a sectional view of the safety device used in the driving gearing. and Fig. 17 is a detail of one ol the breakllldt. pins used in said safety device.

In my prior devices, after the stereotype printing plate is ejected from thc'custing mechanism, it is lifted from the core of the casting mechanism lrv a suitahlc lifter. convcver then lides the plate along a suitable guiding, device past two sawsqwhich cut oi'l' and true the straight edges of the 5 plate. ll this movement. the plate passes into an arch. ll is clamped in this arch. and its inside surface istrucdout.and the curved ends thereof trimmed or hevclcd oli' h suitable tools. The plate is then carried or slid liy a second conve ver out on to a delivery stand or horse.

The present application relates chicl'ly to in-lprovements and additions to this finishing: mechanism. In this specification and the drawings only enough of the mechanism is shown to enable a person skilled in the art to underl Stitllilillc improvements when considered in l connection with said prior patents.

l The same reference letters and figures I .525 of Feb. 1900, are used in this case to refer to the same parts so far as the are applicable. The new parts, and modifications ol" the old parts which constitute the subject matter of the present improvements are dcs'i'uatcd lrv reference figures commciu-hin with the number 580.

The inecl'ianism illustrated in the drawingzs will now he described. and from such description a clear unilerstaiuliup will he had of the present improvements. these improvements will he more specifically pointed out the end. of thi-- .--"pecilicat in.

used in said prior application Yo. 8338i. and In said prlor English .latent 1o. 2

j and partuuilarixed in the claims at the cnd hereo'r.

ile'l' and in lclail.

.i. des

l 0 ti (if a...

disk 505.

livery stand; which parts are arranged as shown and described in said last named English patent.

Instead of driving the machine by a belt as formerly, in this present application I have shown the same arranged to be preferably and directly driven from a motor.

500 designates an electric motor, which has a pinion 501 on the armature shaft thereof. This pinion 501 meshes with a gear 502 secured on the driving shaft 317 of the machine. This driving shaft, carries a worm 318 which engages a worm-wheel 31S) looselyfitted on the shaft 320. Keyed on the shaft 320 is a hub 503 which is connected to said worm-wheel 319 by one or more breakable pins 504. These pins are strong enough to drive the machine in its regular operation, but are sheared ofl if any part of the machine meets with an inordinate-ohstriwtion, such as an imperfect plate. These pins 504 being the breakable parts can be easily replaced when the machine is started again.

shaft 317 just inside the fly wheel311,.as

shown in Fig. 13. A brake-band 506 of flexible material is arranged around said One end of the brake-hand is secured to a piece 507, which is formed integrally with the lever 309, and the other end of the brake-band is connected to a piece 508 which has an extending screw-threaded shank, which is lloosely fitted in the extend ing end of the piece 507. Nuts 509 are threaded on said-piece. By this construction the tension of the band can be adjusted.

As hereinafter described, the operating lever 306 is connected to the controller of the motor, and by this connection thereof to the brake. I

When the lever is moved to throw the controller out to stop the motor, the brake will be applied, and when the lever is moved to throw the controller in to start the motor. the brake will be released.

The connections from the lever 306 to the controller are arranged as follows :A piece 510 is secured on the lever 306. and has a pin which connects by link 511 to a pin mounted on an arm 512, secured on a short shaft 513, jonrnaled in a suitable bracket. This shaft also carries a bevel segment 514. which meshes with a bevel segment 515, se-

cured on the shaft 516, journaled in suitable brackets attached to the framing. On the endof said shaft 516 is arranged an arm 517, which connects by an adjust-able link 518 to the controlling'arm 519 of a rheostat 520. This construction is clearly shown in Figs. 13, 14. and 15.

- In Fig. 13 the construction at the front of the machine, and the motor attached to the rear of the machine, is only shown, the traming being broken away, and the finishing mechanism omitted. On said shaft 320 is at.- ranged a. pinion 321, which meshes with an intermediate gear 322, which liItiGI'JXWSlIQS with a gear on the shaft-'74. A second pinion 324 is arranged on said shaft 320, and meshes with a gear 325 loosely turning on a stud. A pinion 326 is secured to the gear This pinion engages an intermediate 327, which engages another intermediate 328, which latter engages a gear 329 on the shaft 293 of the finishing tool. Said finishing tool is arranged substantially the same as shown and described in said last English patent. with the addition hereinafter noted. Said finishing tool consists of an arm 29-1. which carries a knife 295. Edge finishing tools are also secured to said arm 294. Said arm 294 has lugs 521, threaded into which are screws 522, the heads of which rest against the underside of the knife 205, whereby the knife can be adjusted on the arm. A positioning piece is arranged on the front face of the knife. This positioning piece has pins 524 which fit into holes bored through the knife. The bolts which clamp the knife to the arm rest on this finishing piece. whereby when the knife is clamped in place. this positioning piece will be secured with the knifeto said arm. It will also be noted, that when the knife is adjusted by the screws 522. the positioning piece will also be adjusted. This'positioning piece 523 is provided with projections or ears 525, which are arranged to pass around between the ribs which are formed on the inside of the plate. by the grooves 182 in the core or cylinder O. Thus the positioning piece will move around between the ribs of the plate in front of the knife 295 as the same moves to true up the inside of the plate, byshearing off the ribs.

The projections or cars 525 on the positioning piece 523 are smoothed or rounded down on their frontfaces as shown in Fig. 10' so that they will fit easily into the grooves on the stereotype plate. If an imperfect or distorted plate should be brought into the arch. this positioning piece moving in front of the knife will throw or move such imperfect plate away from the knife. and position it properly against the inside of the arch, so that it will not offer obstruction to the knife, nor allow the knife to cut improperly into the body of the plate.

The arch U, and the hearings for the shaft 293 which carries the shaver-tools, are secured to a supplemental frame A, as shown in Fig. 7 This keeps the shaver-tool and arch in accurate relation one withthe other, without depending upon the main framing.

The driving shaft 317 carries a bevel gear 332, which by means of miter ears on a shaft arranged as shown in said ast named English patent, drives a gear 336 on a vertical shaft 337. This vertical shaft by the pulleys and belting described in said last named English patent, drives the saws SS, which are arranged to cut off the ed es of the plate as the same is movedalong 1n the cylindrical guidingframe 233.

On the framing between each saw and the arch is arranged a plate-cleaner 526, as shown in Figs 11 and 12; Each of these plate-cleaners consists of a metallic piece having a slot through which passes a bolt 527 tapped into the framing. Each platecleaner is set just to touch the plate as it is moved along by the first conveyer to brush off-any particles of metal or chips adhering to it.

A. plate-cleaner may be used on each side of the cylindrical guiding frame 233, only one being shown, as the construction of each then would be the same.

The first conveyer which takes the plate from position over the core or cylinder C and moves the same along the cylindrical guiding frame 233 past the saws and into the arch, is constructed the same as shown and described in said lastnamed English patent, with the exception of the safety device hereinafter particularized. The following parts of this conveying device are sh wn in this application: On the shaft 74 is arranged a bevel gear 338, which meshes with a bevel gear 339 loosely journaled on a stud 340. Connected to this bevel ear is a crank-arm 341, which connects to t e end of rack-bar 342 by a pin 528. This crankarm pin is made of such material, and is turned away on the joint between the crankrack 342, as shown arm 341 and the slidi in Fig. 2, so that said pin will have suficient strength to drive the first conveyer in its regular operation, but is made of such size and material as to-break off easily the carrier meets the obstruction of an imperfect plate. If this should happen, this pin 528 being the breaking part, can be easily replaced to start the machine again in regular operation. The sliding rack-bar 342is arranged to reciprocate in a frame hung on shaft 344, so as to en age pinion 345. Mounted on the end of sald shaft 344 is a gear 255 which will be oscillated by before described crank connect-ions to reciprocate the first conveyer. This first conveyer 'is constructed as shown in said last named English patent. The rack-bar 253 of the same runs in aguide 254,; and connects to generally comprise the conveyor head, which is not shown in this present application, which conveyer head moves on guiding bars 257. This first conveyer will move the plate into the arch U, the plate being guided into said arch by guide 273 and spring-guide 274. A clamping jaw 275 is arranged as shown and described in said last named English patent to coiiperate with the spring guiding-jaw 274. This clamping-jaw 275 is mounted on guide rods 288 which pass through hollow screws 289 tapped in ears 290, springs 291 being arranged between said hollow screws and the clamping jaw. Rods 287 project down from said clamping jaw, and carry check-nuts 286, engaging which are fingers 285 mounted on shaft 284. Instead of op erating these fingers from the shaft of gear 328, as in the last named English patent, I preferably arrange the cam which is to operate the same on the shaft 74, and operate said fingers by an adjustable connection 529. This slight change in the position of the cam makes no ditlerence in the general operation of the clamp. A short shaft 348 is driven by bevel gears from the shaft 74, as is shown and described in said prior English patent, This shaft carries a crank-arm 349 which connects to the sliding rack-bar 350. The crank pin 530 used in said crank-arm 349 is made exactly as the crank-pin 528 for the first conveyer, so that if the second conveyer meets with an undue obstruction, this pin 530 will break to save the mechanism, whereby when the fault has been reinedied, the machine can be started again in its regular operation by replacing the pin 530. The rack-bar 350 engages pinion 353 on shaft 352, which carries an actuating gear 302 which engages a rack-bar on the second conveyer 300 as in said last -named English patent. This second conveyer will slide the finished plate out on the delivery stand H.

In practice I have found that it is desirable to trim the straight edges of the plates up to the type headings thereof.

Stereotype printing plates as usually made, have the column rules extending circumferentially, and the type-headings which come along the straight edges of the plate the name of the paper, the page, and the number of the issue on one edge, and the bottoms of the columns on the other edge; To provide a convenient mechanism for trimming the plates up along these straight edges, I have arranged the following mechanism: At a convenient point on the shaft 317 is arranged a pulley 531,which connects bybelt 532 to a small pulley 533 arranged on a shaft 534 journaled in bearings at the end of the framing A. A belt tight,- ener consisting of a piece 535 mounted on a suitable pivot carrying two rollers 536, is usually arranged in connection with the belt 532, so that the'same can be properly adjusted. The piece is adjustable by means of a screw 537 tapped in the framing A. On the ends of the shaft 534 are arranged pulleys 538 which are belted to drive the routing tools, as hereinafter described. These routing tools are arranged on each side of the delivery stand, and are duplicates, so that it is only necessary to describe one. For this description the front router will be described. Running around the front pulley 538 is a belt 539. This belt. 539 extends from the pulley 538 to a small pulley 540, arranged in a pivoted arm 541, which is pulled to the right by a connected spring 542, which is attached to a screw 54-3 passing through a pivoted ear 544, which screw has check-nuts threaded' thereon. By this construction. the pulley 540 will be pulled to the right to keep the belt 539 under tension, and to compensate for the movements of the routing tool. as hereinafter described, and this, pull can be adjusted. From the small pulley 540, the belt extends to 'a small loose'pulley 545 mounted in the router frame, up around a pulley 5&6 for driving the router tool, down around a loose pulley 547 mounted in the router frame. From this last pulley, the belt 539 extends around a loose pulley 5&8 journaled at the end of the delivery stand or horse. and then back around a loose pulley 549 to the driving pulley The routing tool frame is mounted on bars 550, which are secured to the end of the framing A, and to a bracket 551 projecting from the end of the delivery stand. The routing tool frame 554 has bearings which are fitted to'the rods or bars 550. The delivery stand is provided with ledges 553 along its straight edges, on which the plate P slides as it is ejected out on the delivery stand. These ledges will hold the plate in accurate positionrelatively to the routing tool. The bars 550 are arranged parallel to these ledges so that the routing tool frame will slide parallel to the straight edge of the plate. Bearings are provided in the frame 554 for the small shafts which carry the loose pulleys 545 and 547. A handle 555 is provided so that the frame can he slid along on the rods 550. The frame 554 has projecting ears 556, pivoted to which are arms 557 of a supplemental frame These arms 557 carry bearings in which the shaft 559 of the pulley 546 is journaled. On" the end of the shaft 559 is formed a chuck'560, in which the routing tool 561 is secured. This routing tool is set by a set screw 560" so that it will just clean off the raised relief type surface of the plate at its edge without cutting through-the body of the plate. A screw 562 tapped in the supplemental frame 558 limits the downward motion of said supplemental frame It will be seen that as the driving belt 539 passes from the pulley 540 to the end pulley 548 that it is looped up over the driving pulley 546 by the loose pulleys and 547. By this arrangement the frame 554 can be moved back and forth on the rods 550 without disturbing the wrap of the belt around said pulley 546, so that said pulley will be properly driven, no-matter how the frame is moved back and forth on the rods.

The supplemental frame 558 is provided with a handle 563, by which the supplemental frame can be raised, and thus the routing tool 561 moved up and down to follow the type heading of the plate.

The spring and pivoted arm 541 controlling the pulley 540 allow the proper lost motion in the belt 539 to provide for this up and down movement of the routing tool.

It is not necessary to clamp the plate for this operation. as the plate is of sufficient weight to resist the action of the routing tool.

The 0 )eration with this device. is substantially this: After the plate has been ejected out on the delivery stand H, the operator who stands at the front side of the delivery stand, seizes the handle 555 with one hand and the handle 563with the other hand. By pushing on the handle 555 the routing tool frame 554 is slid along on the rods 550. As the routing tool frame moves past the plate, the operatormoves' up and down on the handle 563 to move the routing tool up and down to follow the'contour of the edge of the type heading of the plate. The routing tool 561 is driven at a high rate of speed by the belting previously described, and the tool is so formed and positioned that the projecting'relief or type surface of the plate will be trimmed up very accurately, any bnr or surplus metal being eliminated by this operation, so that the contacting type surface of the plate will be clean-cut,-and will )rint without blur or mar. It will be note that the movement imparted to 'the routing tool by raising and lowering the same is such as to impart a bodily movement to the cutting end of the routing tool tangentially to the semi-cylindrical cast plate. As the routing tool is moved along the straight edge of the cast plate and as previously set forth, as the end of the routing tool is set to engage into the plate just about the depth of the relief or type surface of the same, and as the raising and lowering movement is very slight, the routing tool may .be moved to follow the lower edge contour of the type headin and trim the same off. This operation ta (es but a short period oftin'ie, and can be accomplished as fast as the plates are ejected out on the delivery stand. This routing operation is generally done to both edges of the plate; that is to say, a routing tool mechanism similar to that just described is arranged on the rear side ofrthe delivery which is left-hand compared with the rightprinting plate finishing hand front routing tool, shown in Fig. 6, will be driven in the proper direction.

Only the detail constructions which make up the present improvements have been specified and described at length in this case. as it has not been deemed necessary to go over the construction of the machine as a whole, in view of the disclosure contained in said last named English patent.

The foregoing description and drawings will enable any one skilled in the art to practice 'the present improvements.

I am aware that numerous changes may be made in the mechanisms heretofore shown and described as constituting the present improvements, without departing from the broad scope of the claims hereunto annexed. I do not wish, therefore, to be limited to these details, but

What I do claim and desire to secure by Letters Patent, is

1. The combination in a curved stereotype printing plate finishing mechanism, of a shaving knife for truing out the concave.

surface of the plate, and a positioning piece arranged to engage the concave surface of the plate to keep the same in proper position while being shaved.

2. The combination in a curved stereotype printing plate finishing mechanism, of a shaving knife for truing out the concave surface of the plate, and a positionin piece arranged to engage the concave sur ace of the plate in advance of the knife to keep the plate in proper position.

3. The combination in a curved stereotype printing plate finishing mechanism, of a rotating shaver knife for truing out the concave surface of the plate, and a positioning piece arranged to move in cooperation with said shaver knife to keep an imperfect plate in proper position:

4. The combination in a curved stereotype printing plate finishing mechanism, of a rotating shaver knife for truing out the concave surface of the plate, and a positioning piece secured to the shaving knife having projections to go in between the ribs of the plate.

5. The combination in a curved stereotype mechanism, of. a

revolving shaver knife for truing out the concave surface of the' plate, and a positionmg plece secured to the front of the knife tool, means whereby the and havingcombdike projections to fit in between the ribs of the plate.

6. The combination in a stereotype printing plate finishing mechanism, of a revolving shaft having an arm, a shaver-knife adjustably secured on said arm, and a positioning piece secured to and in advance of said knife.

7. The combination in a stereotype printing plate finishing mechanism, of a revolving shaft, an arm secured thereto, a shaver knife adjustably secured on said arm, and a positioning piece rigidly secured to said shaver-knife to move in advance thereof, and having projections to fit in between the ribs of the plate.

8. The combination in a stereotype printing plate finishing mechanism, of an arch, means for moving a plate into the arch, and for clamping the same therein, a shaver knife for truing out the inside of the plate, carrying a positioning piece moving in advance thereof, and having rounded projections registering with the spaces between the ribs of the arch.

9. The combination in a stereotype print ing plate finishing mechanism, of the framing, an arch, a shaver-tool, and a supple mental frame to which the arch and the bearings for the shaft of the shaver-tool are secured.

10. The combination in a cylindricalplate as it is clamped in said stereotype printingplate finishing mechanism, of a power driven routing tool, means whereby said tool can be set so that its end engages into the plate substantially a depth equal to the relief or type surface thereof, means for moving said router tool along the straight edgev of the plate, and means whereby the router tool can be moved slightly tangentially of the plate to follow the lower contour of the type edge thereof. 11. The combination in a cylindrical stereotype printing plate finishing mechanism, of a stand, a power driven router router tool can be moved along said stand and along the straight edge of the plate, meanswhereby said router tool can be set to engage the, plate a depth substantially equal to the relief or type surface thereof, and meanswhereby said router tool can be moved bodily relativelyto the stand and its end tangentially to the surface of the plate.

12. The combination of-a stand, guiding means arranged parallel thereto, a frame mounted on said guiding means, a supplemental frame movable relatively to the first frame, a router tool mounted in said supplemental frame, and means for driving the router tool.

- 13. The combination in a stereotype printing plate finishing mechanism, of guiding means, a frame mounted thereon, a

router tool carried thereby, a pulley for driving the same, two loose pulleys journaled in said framing, and a belt trainedaround said loose pulleys and looped around the pulley which turns the router tool.

14:. The combination in a stereotype printing plate finishing mechanism, of guiding means, a frame mounted thereon, a supplemental frame movably 'mounted on said first frame, a router tool carried by said supplemental frame, a pulley for driving said router tool, loose pulleys carried by the frame, and a driving belt extending to and from said loose pulleys and looped around the pulley which drives the router tool.

15. The combination in a stereotype printing plate finishing mechanism, of guiding means, a frame mounted thereon, a supplemental frame movably mounted on said first frame, a router tool carried by said supplemental frame, a pulley for driving said router tool, loose pulleys carried by the frame, a driving belt extending to and fromsaidloose pulleys and looped around the. pulley which drives the router tool, and a spring relief for said belt to compensate for the movement of the supplemental frame.

16. The combination in a stereotype printing plate finishing mechanism, of guiding means, a frame mounted thereon, a sup-1 plemental frame pivoted thereto, a routertool carrying device journaled in the supplemental frame, loose pulleys mounted in the first named frame, and a driving belt extending to and from the loose pulleys andaround the pulley which actuates the router toolcarrying device.

17. The combination in a stereotype printing plate finishing mechanism, of guiding means, a frame mounted thereon, a handle for moving said frame along said guiding means, a supplemental frame pivoted to said first named frame, a router tool c'arrying device journaled therein, driving connections for rotating said router tool carrying device, and a handle mounted on said supplemental frame.

1-8. The combination in a stereotype printing plate finishing mechanism, of two guiding rods, a frame mounted to slide thereon, a supplemental frame supporting a router tool carrying device. loose pulleys journaled in said frame, a pulley carried by the supplemental frame for turning the router tool carrying device, handles on the main and supplemental frames, and a driving belt extending to and from said loose pulleys, and looped around the pulley which turns the router tool carrying device.

.19. The combination in a cylindrical stereotype printing plate finishing mechanism, of a supporting stand, ledges at the sides thereof for supporting a semicylindrical stereotype printing plate, a router device arranged in connection therewith and driven from the machine, means whereby said router device can be moved so that the end of the cutting tool will be moved along parallel with the straight edge of the plate and whereby the end of said'router device can be moved tangentially to the surface of the plate, and means whereby said routing device can be set to engage said plate'to a depth substantially equal to the relief or type surface thereof.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing Witnesses.

H. A. WISE WOOD.

Witnesses:

THOB. H. GUNNING, ANNIE B. WALTERS. 

